RF Energy Harvesting for small and IoT devices

This work proposes a wideband rectenna for wireless energy harvesting of small and IoT devices. A redesigned bow-tie antenna with rectangular slots is proposed to achieve scattering parameters at a frequency of 3.89 GHz. In addition, the antenna design is integrated with a rectifying circuit consisting of four single triangular-shaped rectifiers and a voltage stabilization circuit comprising of filters for higher efficiency. Proposed modified bow-tie antenna demonstrates compactness, performance and ease of integration. Key applications of this energy harvester include wireless sensor networks, wearable devices and low power devices for charging.